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logix1390

rbd and pop collision

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hello,

I am trying to find out how to get the "pop collision detect" node to work with my rbd sim. 

I need to get the attributes that the popcollisiondetect creates such as the hitnum, hitprim, hittime etc. I can see the attributes in my geometry spreadsheet but they are all set to 0. 

 I can get other pop nodes to work with and RBD sim like pop force but why doesn't the pop collision detect work ?

I will attach my scene for anyone that wants to take a look. 

Thank you

rbd_collisiondetect.hipnc

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4 hours ago, logix1390 said:

hello,

I am trying to find out how to get the "pop collision detect" node to work with my rbd sim. 

I need to get the attributes that the popcollisiondetect creates such as the hitnum, hitprim, hittime etc. I can see the attributes in my geometry spreadsheet but they are all set to 0. 

 I can get other pop nodes to work with and RBD sim like pop force but why doesn't the pop collision detect work ?

I will attach my scene for anyone that wants to take a look. 

Thank you

rbd_collisiondetect.hipnc

Why do you need pop collisions? Usually you use a sopsolver. Create one and chain it to the postsolve connector; inside there is the impact node with all data you need.

Edited by Drughi

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@DrughiThank you for the response. 

I know how to extract the impact attributes from rbd , but the pop collision attributes are better for certain situations.

For example in this situation, I am trying to extract only the first impact point of each rbd object. The problem is, if the rbd object moves around on the floor after it falls, the rbd impact data will create several different impact points as it moves around on the floor. I only need the first one. I'm not sure how to extract this using the rbd impact attributes 

I know the pop collision detect has an attribute called hittotal which determines how many times the particle has collided. From there I can extract the first hit pretty easy. 

But i'm not sure how to extract this with what the rbd impact attributes.

Would love to get your opinion.

Thank you

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